/* Mobile-only responsiveness helpers.
   Desktop view remains untouched because all rules are inside max-width queries. */

.mobile-menu-toggle {
  display: none;
}

@media (max-width: 900px) {
  html {
    -webkit-text-size-adjust: 100%;
  }

  *, *::before, *::after {
    box-sizing: border-box;
  }

  body {
    overflow-x: hidden;
  }

  iframe,
  embed,
  object {
    max-width: 100%;
  }

  pre,
  code {
    white-space: pre-wrap;
    word-break: break-word;
  }

  .scroll-x,
  .overflow-x,
  .horizontal-scroll,
  .table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  img,
  video,
  canvas,
  svg {
    max-width: 100%;
    height: auto;
  }

  table {
    width: 100%;
    min-width: 0 !important;
  }

  .table-wrap,
  .table-responsive,
  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  table,
  thead,
  tbody,
  tfoot,
  tr,
  th,
  td {
    max-width: 100%;
  }

  .table-container table,
  table.responsive-stack {
    width: 100%;
    border-collapse: collapse;
  }

  .table-container table thead,
  table.responsive-stack thead {
    display: none;
  }

  .table-container table tbody,
  .table-container table tfoot,
  table.responsive-stack tbody,
  table.responsive-stack tfoot {
    display: block;
    width: 100%;
  }

  .table-container table tr,
  table.responsive-stack tr {
    display: block;
    width: 100%;
    margin-bottom: 12px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  }

  .table-container table td,
  table.responsive-stack td {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 14px;
    white-space: normal;
    word-break: break-word;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    background: #fff;
  }

  .table-container table td:last-child,
  table.responsive-stack td:last-child {
    border-bottom: none;
  }

  .table-container table td::before,
  table.responsive-stack td::before {
    content: attr(data-label);
    flex: 0 0 44%;
    max-width: 44%;
    font-weight: 600;
    color: #4b5563;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    font-size: 11px;
  }

  input,
  select,
  textarea,
  button {
    max-width: 100%;
  }

  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="search"],
  input[type="tel"],
  input[type="number"],
  input[type="date"],
  input[type="url"],
  select,
  textarea {
    width: 100%;
    min-width: 0;
  }

  header,
  .header,
  nav,
  .nav,
  .navbar {
    flex-wrap: wrap;
  }

  nav a,
  .nav a,
  .navbar a {
    margin-bottom: 8px;
  }

  header.mobile-nav-enabled {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 20px;
    position: relative;
  }

  header.mobile-nav-enabled .logo-link,
  header.mobile-nav-enabled .logo {
    position: static;
    left: auto;
  }

  header.mobile-nav-enabled .btn-investors {
    position: static;
    right: auto;
    margin: 6px 0 0;
  }

  header.mobile-nav-enabled nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: inherit;
    padding: 16px 20px 20px;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 200;
  }

  header.mobile-nav-enabled.mobile-nav-open nav {
    display: flex;
  }

  header.mobile-nav-enabled nav a {
    margin-bottom: 0;
    white-space: nowrap;
  }

  .mobile-menu-toggle {
    background: transparent;
    border: none;
    padding: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
  }

  .mobile-menu-toggle span,
  .mobile-menu-toggle span::before,
  .mobile-menu-toggle span::after {
    content: '';
    display: block;
    width: 24px;
    height: 3px;
    background: #ffffff;
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .mobile-menu-toggle span {
    position: relative;
  }

  .mobile-menu-toggle span::before {
    position: absolute;
    transform: translateY(-7px);
  }

  .mobile-menu-toggle span::after {
    position: absolute;
    transform: translateY(7px);
  }

  header.mobile-nav-enabled.mobile-nav-open .mobile-menu-toggle span {
    background: transparent;
  }

  header.mobile-nav-enabled.mobile-nav-open .mobile-menu-toggle span::before {
    transform: rotate(45deg);
  }

  header.mobile-nav-enabled.mobile-nav-open .mobile-menu-toggle span::after {
    transform: rotate(-45deg);
  }

  .controls,
  .filters,
  .form-row,
  .form-group,
  .filter-row,
  .toolbar,
  .actions,
  .range-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .controls > *,
  .filters > *,
  .form-row > *,
  .form-group > *,
  .filter-row > *,
  .toolbar > *,
  .actions > *,
  .range-group > * {
    flex: 1 1 220px;
    min-width: 0;
  }

  .two-columns,
  .three-columns,
  .container,
  .columns,
  .column,
  .grid,
  .grid-container,
  .cards,
  .card-grid,
  .row {
    width: 100%;
    max-width: 100%;
  }

  .row {
    flex-direction: column;
  }

  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .content {
    margin-left: 0;
  }

  .nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .nav-links li {
    flex: 1 1 200px;
  }
}

@media (max-width: 768px) {
  button,
  .btn,
  .button {
    min-height: 40px;
  }

  input,
  select,
  textarea {
    font-size: 16px;
  }

  #companyIds,
  #companySearch {
    width: 100% !important;
  }

  #chartWrap {
    height: 260px;
  }

  h1 {
    font-size: clamp(24px, 6vw, 32px);
  }

  h2 {
    font-size: clamp(18px, 4.8vw, 24px);
  }

  .stats-grid,
  .cards-container,
  .news-grid,
  .portfolio-grid,
  .companies-grid,
  .investor-grid,
  .fund-grid {
    grid-template-columns: 1fr !important;
  }

  .filters,
  .filter-bar,
  .filter-row,
  .action-buttons,
  .actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 480px) {
  .hero,
  .hero-content {
    text-align: center;
  }

  .table-container table td::before,
  table.responsive-stack td::before {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .table-container table td,
  table.responsive-stack td {
    flex-direction: column;
    align-items: flex-start;
  }
}